Long? Not really. Has the generic compact short-barrel design associated with SMGs.
Two-handed? Many modern SMG variants include a foregrip for the 2nd hand. Assault rifles without foregrips are also common, and traditionally did not come with one.
Scope? Common on SMGs just as it is uncommon. Same applies to assault rifles. Depends on the application.
Weak gunfire sounds? Sounds more like it's using pistol rounds, and not the familiar punch-packing NATO rounds you hear in games.
Looks like a fancy SMG, and sounds like an SMG.
But it's a mish-mash SMG design inside a run & gun sci-fi FPS, making it your low medium-end machine gun until you find an enemy with a BIGGER GUN to steal.